用对称密码体制实现双向认证

安全可靠的通信交流是网络通信的基本要求．在网络的通信双方之间，常常需要进行对等的双向相互认证，但是双向认证并不简单等于两次使用单向认证．文中讨论了采用对称密码体制实现双向认证以及有关的安全问题．

Two Way Authentications Based on Symmetric Cryptosystems

Secure authenticated exchange is essential to network security. Two way authentication is often needed between two parties in a communication network, but the two way authentication is not simply twice the one way. This paper investigates protocols for two way authentication by using only private key cryptosystems, and discusses the security of such authentication protocols.